FirebaseUI-不兼容的类型：字符串不能转换为DatabaseReference

Question

我Incompatible types: String cannot be converted to DatabaseReference在onItemClick获取Firebase数据库密钥时出错。

我用来从Firebase数据库填充ListView的代码

mListView = (ListView) rootView.findViewById(R.id.listview1);

DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReferenceFromUrl("https://my-project.firebaseio.com/name/data");

FirebaseListAdapter<Personnel> adapter = new FirebaseListAdapter<Personnel>(getActivity(),Personnel.class,R.layout.layout_items,databaseReference) {

    @Override

    protected void populateView(View v, Personnel model, int position) {

        TextView textView = (TextView) v.findViewById(R.id.tv_title);

        textView.setText(model.name);

    }

};

mListView.setAdapter(adapter);

ListView的onItemClick（从修改）

mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

    @Override

    public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {

        DatabaseReference itemRef = adapter.getItem(position);

        Toast toast = Toast.makeText(getActivity().getApplicationContext(), itemRef.getKey(), Toast.LENGTH_SHORT);

        toast.show();

    }

});

首先我在下面有Variable 'adapter' is accessed from within inner class, needs to be declared final错误adapteradapter.getItem(position);onItemClick

所以我添加final了final FirebaseListAdapter<Personnel> adapter...这个错误

我尝试声明adapter为全局，但仍然遇到相同的错误。请让我知道如何解决此问题。谢谢！